Simulation of micro- and nano-scale flows via the lattice Boltzmann method |
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| Institution: | 1. Exa Corporation, 3 Burlington Woods Drive, Burlington, MA 01803, USA;2. Department of Chemical Engineering, Carnegie Mellon University, Pittsburgh, PA 15213, USA;1. Sir Joseph Swan Centre for Energy Research, University of Newcastle, NE1 7RU,UK;2. School of Mechanical Engineering, Beijing Institute of Technology, 100082, P.R.China;1. Department of Mechanical and Nuclear Engineering, The Pennsylvania State University, University Park, PA 16802-1414, USA;2. General Atomics, P.O. Box 85608, San Diego, CA 92186-5608, USA;1. School of Energy Science and Technology, Harbin Institute of Technology, Harbin, 150001, China;2. School of Mechanical and Manufacturing Engineering, University of New South Wales, Sydney, 2052, Australia;1. Research Centre of Multiphase Flow in Porous Media, China University of Petroleum, Qingdao 266580, China;2. Earth and Environmental Sciences Division, Los Alamos National Laboratory, Los Alamos 87545, USA |
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| Abstract: | We use the lattice Boltzmann method (LBM) for analysis of high and moderate Knudsen number phenomena. Simulation results are presented for microscale Couette and Poiseuille flows. The slip velocity, nonlinear pressure drop, and mass flow rate are compared with previous numerical results and/or experimental data. The Knudsen minimum is successfully predicted for the first time within the LBM framework. These results validate the usage of the LBM based commercial, arbitrary geometry code PowerFLOW for simulating nanoscale problems. |
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